74AC299MTCX Datasheet, PDF (1/14 Pages) Fairchild Semiconductor – 8-Input Universal Shift/Storage Register with Common Parallel I/O Pins

January 2008
74AC299, 74ACT299
8-Input Universal Shift/Storage Register with Common
Parallel I/O Pins
Features
■ I_CC and I_OZ reduced by 50%
■ Common parallel I/O for reduced pin count
■ Additional serial inputs and outputs for expansion
■ Four operating modes: shift left, shift right, load
and store
■ 3-STATE outputs for bus-oriented applications
■ Outputs source/sink 24mA
■ ACT299 has TTL-compatible inputs
General Description
The AC/ACT299 is an 8-bit universal shift/storage regis-
ter with 3-STATE outputs. Four modes of operation are
possible: hold (store), shift left, shift right and load data.
The parallel load inputs and flip-flop outputs are multi-
plexed to reduce the total number of package pins. Addi-
tional outputs are provided for flip-flops Q₀, Q₇ to allow
easy serial cascading. A separate active LOW Master
Reset is used to reset the register.
Ordering Information
Package
Order Number Number
Package Description
74AC299SC
74AC299SJ
74AC299MTC
74AC299PC
M20B
M20D
MTC20
N20A
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm
Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
74ACT299SC
74ACT299MTC
M20B
MTC20
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm
Wide
74ACT299PC
N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number.
All packages are lead free per JEDEC: J-STD-020B standard.
©1988 Fairchild Semiconductor Corporation
74AC299, 74ACT299 Rev. 1.4.0
www.fairchildsemi.com